<template>
     

     <el-container class="home-container">
      <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>购物商场后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
      </el-header>
      <!-- 页面主体 -->
      <el-container>
      <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
            <el-menu
              background-color="#333744"
              text-color="#fff"
              active-text-color="#409eff"
              unique-opened
              :collapse="isCollapse"
              :collapse-transition="false"
              router
              :default-active="activePath">
              <!-- 一级菜单 -->
              <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
              <!-- 一级菜单模板 -->
                <template slot="title">
                  <!-- 图标 -->
                  <i :class="iconsObj[item.id]"></i>
                  <!-- 文本 -->
                  <span>{{item.authName}}</span>
                </template>

                <!-- 二级菜单 -->
               <el-menu-item :index=" '/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
               @click="saveNavState('/'+subItem.path)">
                    <template slot="title">
                      <!-- 图标 -->
                      <i class="el-icon-menu"></i>
                      <!-- 文本 -->
                      <span>{{subItem.authName}}</span>
                    </template>
               </el-menu-item>
            
              </el-submenu>
              
            </el-menu>
        </el-aside>
      <!-- 右侧内容 主体-->
        <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
        </el-main>

      </el-container>
    </el-container>
</template>


<script>
export default {
    data(){
        return{
          menulist:[],
          iconsObj:{
            '125':'iconfont icon-user',
            '103':'iconfont icon-tijikongjian',
            '101':'iconfont icon-shangpin',
            '102':'iconfont icon-danju',
            '145':'iconfont icon-baobiao'
          },
          isCollapse:false,
          //被激活的链接地址
          activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods: {
      logout(){
        window.sessionStorage.clear()
        this.$router.push('/login');
      },
      async getMenuList(){
      const {data: res}=  await this.$http.get('menus')
      if(res.meta.status !==200) return this.$message.error(res.meta.msg)
      //console.log(res)
      this.menulist=res.data
      },
      //点击按钮菜单栏折叠与展开
      toggleCollapse(){
          this.isCollapse=!this.isCollapse
      },
      //保存链接的激活状态
      saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
      }
    }
};
</script>


<style lang="less" scoped>
.home-container{
  height: 100%;
}

.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div{
    display: flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
  }

}
.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }

}

.el-main{
  background-color: #eaedf1;
}

.iconfont{
  margin-right: 10px;
}

.toggle-button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>